66-million-year-old feather found in dinosaur poop may explain bird survival

The 66-million-year-old feather found inside fossilised dinosaur poop may offer clues about why some birds survived the asteroid impact that killed most dinosaurs. Researchers found feathers, fish scales and bird bones in the coprolite. The feather’s primitive structure suggests insulation and moulting may have played a role in determining which birds survived.